Source: https://tendernation.io/opportunities/01a13bce-f757-7375-94fc-d92f5ec82aef/sewer-mapping awarded GB restricted procedure Suitable for SMEs # Sewer Mapping [Thames Water Utilities Limited](https://tendernation.io/buyers/thames-water-utilities-limited) Estimated value £5,996,000 Published 6 Mar 2026 Deadline Rolling deadline ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still bid. - Split into 3 lots You can usually bid for just the lots you can deliver. - Sets up a framework Winning a place does not guarantee work: contracts are awarded later as call-offs, and the list usually stays closed for years. [More contracts for small businesses and VCSEs](https://tendernation.io/opportunities/for-small-businesses) ## About this tender Thames Water is seeking to develop the mapped sewer network throughout Greater London and the Thames Valley area, in order to reduce blockages, internal and external floods and pollution. Unmapped sewers lead to a delay in Thames Water locating and attending blockages, floods and pollution, affecting local communities and the environment. The objective of FA2241 is to map any unmapped sewer networks at scale, speed and accuracy, directly supporting the Pollution Incident Reduction Plan (PIRP) that Thames Water is working towards during AMP8. - Lot 1 Aerial Mapping: Capture of 2,484 km² across 71 Sewer Drainage Area Catchments (SDACs) using manned aircraft, delivering georeferenced 2D, oblique 2D, and 3D imagery. - Lot 2 Asset Detection: Detection of manholes, gullies, rainwater downpipes, soil stacks, misconnections, and outfalls with confidence grading. - Lot 3 Sewer Inferencing: Semi-/automated inferencing of unmapped sewers, laterals, drains, rising mains, and selected SPSs, achieving ?80% accuracy. ## CPV classification Sewer survey services Source Find a Tender (UK) · Notice ocds-h6vhtk-0597b6-2026-03-06T10:21:08Z [View official notice](https://www.find-tender.service.gov.uk/Notice/ocds-h6vhtk-0597b6-2026-03-06T10:21:08Z) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile Thames Water Utilities Limited: past awards and live tenders](https://tendernation.io/buyers/thames-water-utilities-limited) [Sector More Sewage, refuse, cleaning & environmental tenders](https://tendernation.io/sectors/sewage-refuse-cleaning-environmental) ## More tenders like this [Legionella Consultancy Services · South Norfolk Council · 30 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a145df-10ba-7014-b1c1-016db3ffb9a8/legionella-consultancy-services) [CVG Close & Cleaning Contract 2027 - 2029 · Clyde Valley Housing Association Limited · 29 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a14571-33da-7157-81c2-c436f876675c/cvg-close-cleaning-contract-2027-2029) [Scrap Metal, LAB (Lead Acid Batteries) and Abandoned Vehicles Collection, Transportation and Recycling · Leeds City Council · 31 days left · 18 Nov 2026](https://tendernation.io/opportunities/01a14503-5842-73c7-b50c-d3b4f7df419a/scrap-metal-lab-lead-acid-batteries-and-abandoned-vehicles-collection-transp) [Provision of Window Cleaning Services · Nottingham Trent University · 29 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a14503-5864-70da-bf83-bc4caf9b193f/provision-of-window-cleaning-services) [Provision of West Ardnamurchan Refuse & Recycling Collections · Highland Council · 29 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a14495-7b01-724d-9e1e-a712a0c8d8d3/provision-of-west-ardnamurchan-refuse-recycling-collections) [Bishop Auckland College ~ Cleaning Tender · Bishop Auckland College ~ Cleaning Tender · 26 days left · 13 Nov 2026](https://tendernation.io/opportunities/01a14495-82dd-7270-80b1-225a2de20cdb/bishop-auckland-college-cleaning-tender)